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ubuntucveUbuntu.comUB:CVE-2020-15658
HistoryJul 29, 2020 - 12:00 a.m.

CVE-2020-15658

2020-07-2900:00:00
ubuntu.com
ubuntu.com
15
file download
vulnerability
firefox esr
firefox
thunderbird
special characters
spidermonkey
javascript engine
unix

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:N/I:P/A:N

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

EPSS

0.004

Percentile

73.8%

JSON

The code for downloading files did not properly take care of special
characters, which led to an attacker being able to cut off the file ending
at an earlier position, leading to a different file type being downloaded
than shown in the dialog. This vulnerability affects Firefox ESR < 78.1,
Firefox < 79, and Thunderbird < 78.1.

Notes

Author Note
tyhicks mozjs contains a copy of the SpiderMonkey JavaScript engine
OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchfirefox< 79.0+build1-0ubuntu0.18.04.1UNKNOWN
ubuntu20.04noarchfirefox< 79.0+build1-0ubuntu0.20.04.1UNKNOWN
ubuntu20.10noarchfirefox< 80.0.1+build1-0ubuntu1UNKNOWN
ubuntu21.04noarchfirefox< 80.0.1+build1-0ubuntu1UNKNOWN
ubuntu21.10noarchfirefox< 80.0.1+build1-0ubuntu1UNKNOWN
ubuntu22.04noarchfirefox< 80.0.1+build1-0ubuntu1UNKNOWN
ubuntu22.10noarchfirefox< 80.0.1+build1-0ubuntu1UNKNOWN
ubuntu23.04noarchfirefox< 80.0.1+build1-0ubuntu1UNKNOWN
ubuntu23.10noarchfirefox< 80.0.1+build1-0ubuntu1UNKNOWN
ubuntu24.04noarchfirefox< 80.0.1+build1-0ubuntu1UNKNOWN
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CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:N/I:P/A:N

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

EPSS

0.004

Percentile

73.8%

JSON
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